Home Generator Installation and Service in Prescott Valley, AZ

When the power goes out in Prescott Valley, you lose more than lights. You lose your well pump, which means no water. You lose heating and cooling, which is dangerous during summer heat or winter freezes at 5,100-foot elevation. You lose refrigeration, home security, internet, and the ability to work from home. For households with medical equipment like CPAP machines or oxygen concentrators, an outage becomes a health emergency.

Assurance Electrical Services

A home standby generator eliminates all of that. Installed permanently outside your home, it detects a power outage and starts supplying electricity within 10 to 30 seconds. Automatically. Without you lifting a finger.

Assurance Electrical Services is an authorized GENERAC dealer (ROC #322083) providing generator installation, repair, and maintenance throughout Prescott Valley, Prescott, Chino Valley, and Dewey-Humboldt. Call (928) 713-2177 for a free sizing consultation.

$500 Off Whole-Home Generator Installation

Must be purchased and installed by Assurance Electrical Services. Valid on residential generator jobs over $1,000. Not valid with other offers.

Why Prescott Valley Homes Need a Standby Generator

Power outages in Northern Arizona create real risks for your family and property. Monsoon storms, winter ice events, utility maintenance, and wildfires in the surrounding national forest all cause outages lasting hours or days. During that time, you lose:

  • Heating and cooling — Dangerous during summer heat or winter freezes at Prescott Valley’s 5,100-foot elevation.
  • Well pumps — Many Prescott Valley homes depend on well water. No power means no water.
  • Refrigeration — A full freezer can spoil within 24–48 hours without power.
  • Medical equipment — CPAP machines, oxygen concentrators, and home medical devices stop working.
  • Home security and internet — Cameras, alarms, and remote monitoring go offline.
  • Work-from-home capability — An outage during business hours means lost productivity and missed deadlines.

A home standby generator eliminates these vulnerabilities. Installed permanently outside your home and connected directly to your electrical panel through an automatic transfer switch, it detects a power outage and starts supplying electricity within 10 to 30 seconds—automatically, without you lifting a finger.

Free Generator Sizing Consultation

We visit your home, assess your panel, calculate your exact power requirements, and recommend the right generator size and model—no obligation. Undersized generators fail under load. Oversized generators waste money. We get it right.

Types of Home Generators We Install

Power outages in Northern Arizona create real risks for your family and property. Monsoon storms, winter ice events, utility maintenance, and wildfires in the surrounding national forest all cause outages lasting hours or days. During that time, you lose:

Whole-House Standby Generators

A whole-house standby generator provides enough power to run your entire home—HVAC, kitchen appliances, well pump, all lighting and outlets. These units typically range from 22kW to 26kW and run on natural gas or propane. Ideal for larger Prescott Valley homes or homeowners who want complete power coverage with zero compromises during outages.

Essential Circuit Backup Generators

Essential circuit generators power only your most critical systems: refrigerator, heating, well pump, a few lights, and select outlets. These units range from 10kW to 20kW and offer a more affordable entry point. We determine which circuits to prioritize based on your household needs, and the automatic transfer switch manages the load.

GENERAC Home Generators

As an authorized GENERAC dealer, we install, service, and support the full GENERAC home standby lineup. GENERAC has manufactured generators for more than 60 years and is the leading brand in residential backup power. Their generators feature automatic operation, Wi-Fi monitoring through the Mobile Link app, quiet operation (66–72 dB), and industry-leading warranties. We help you select the right GENERAC model based on your home size, electrical load, fuel availability, and budget. We also install commercial standby generators for businesses and portable generator hookups with transfer switches and interlock kits.

How to Choose the Right Generator Size

Selecting the correct generator size is critical. An undersized generator cannot handle your electrical load and will shut down or damage connected equipment. An oversized generator wastes fuel and costs more upfront than necessary. The right size depends on your total electrical load, which circuits you want backed up, and whether you choose whole-house or essential-circuit coverage.

A general guideline for Prescott Valley homes: A 2,000 to 2,500 square foot home with central HVAC, a refrigerator, well pump, and standard appliances typically needs a 16kW to 22kW generator for whole-house coverage. Homes with electric water heaters, hot tubs, or EV chargers may require a larger unit. During your free consultation, our electricians perform an exact load calculation to ensure accurate sizing.

Prescott Valley standby generator outside home providing reliable backup power with professional electrical services

Natural Gas vs. Propane: Choosing Your Fuel

Home standby generators run on either natural gas or propane (LP). The right choice depends on your property:

  • Natural gas — Provides unlimited fuel from your utility connection. No tank to refill. Ideal if your home already has a natural gas line.
  • Propane — Requires a storage tank (typically 250–500 gallons for whole-house generators) but is available in areas without natural gas service. Many Prescott Valley homes use propane. Tank size determines runtime—a 500-gallon tank can power a typical home for several days.

We help you determine the best fuel option based on your property’s existing infrastructure, utility availability, and runtime needs.

Transfer Switch Installation

Every generator connected to your home needs a transfer switch. The NEC requires it for two reasons: preventing dangerous backfeed that can electrocute utility workers, and isolating your electrical system so the generator powers your circuits cleanly.

  • Automatic transfer switches (ATS) — Detect outages and switch to generator power automatically. Standard with all home standby generators. When utility power returns, the ATS switches back and the generator shuts down.

  • Manual transfer switches — For portable generator hookups. You start the generator and flip the switch.

  • Interlock kits — A code-compliant alternative for portable generators using a mechanical interlock at your panel.

If you already have a generator but no transfer switch, or your existing switch is outdated, we evaluate your setup and install the right solution.

Generator Maintenance and Repair

A generator that is not maintained is a generator that may not start when you need it. GENERAC recommends annual professional service that includes:

  • Oil and filter change
  • Spark plug replacement
  • Battery inspection and testing
  • Coolant check (liquid-cooled models)
  • Full operational test under load

Your generator also runs a brief automatic exercise cycle weekly to keep the engine ready. We offer maintenance plans to keep your system in peak condition year-round.

Repair services:

  • Generator will not start — Battery failure, fuel issues, control board problems, starter motor failure.
  • Power output issues — Runs but does not deliver full power or drops circuits under load.
  • Transfer switch problems — Does not detect outage, fails to transfer, or will not return to utility power.
  • Error codes and faults — We diagnose GENERAC and other major brand fault codes and resolve the underlying issue.

Already Have a Generator That Needs Service?

Whether you need annual maintenance, a repair, or your generator failed to start during the last outage, our GENERAC-trained technicians diagnose and service all major standby generator brands.

Why Prescott Valley Homeowners Choose Assurance Electrical

  • Authorized GENERAC dealer
  • Licensed, bonded, and insured, ROC #322083
  • Free sizing consultation
  • Full permit management
  • 100% satisfaction guarantee
  • Ongoing maintenance plans

Authorized GENERAC Dealer. Licensed Electricians. Guaranteed Work.

From sizing to installation, permitting, and ongoing maintenance—one contractor handles everything. $500 off whole-home generator installation. Residential only. Not valid with other offers.

Frequently Asked Questions

A fully installed home standby generator typically costs between $6,000 and $18,000, depending on generator size, fuel type, and installation complexity. This includes the generator unit, automatic transfer switch, electrical connections, fuel line, concrete pad, permitting, and labor. GENERAC essential circuit models start at the lower end, while whole-house systems fall at the higher end. We provide free on-site estimates with transparent, itemized pricing. Currently offering $500 off whole-home installations.
For essential circuits only (refrigerator, lights, a few outlets, well pump), 10kW to 16kW is typically sufficient. For whole-house coverage including HVAC and kitchen appliances, most Prescott Valley homes need 16kW to 22kW. Homes with electric water heaters, hot tubs, or EV chargers may need 22kW or larger. We perform an exact load calculation during your free consultation.
Most home generator installations take one to two days to complete. The timeline includes electrical panel work, transfer switch installation, generator placement, fuel connection, and testing. Permitting and inspection scheduling may add a few additional days.
It depends on the generator size. A whole-house standby generator (typically 22kW or larger) can power everything—HVAC, kitchen, well pump, lighting, and outlets. Smaller essential circuit generators (10kW to 20kW) power only selected circuits. During your consultation, we calculate your full load and recommend the right size.
Yes. The NEC requires a transfer switch for any generator connected to your electrical system. It prevents dangerous backfeed that can electrocute utility workers and damage equipment. Home standby generators include an automatic transfer switch. Portable generators require a manual transfer switch or interlock kit.
Yes, if properly sized. Most residential central AC systems require 3,000 to 6,000 watts of running power with higher starting wattage. A 16kW or larger home standby generator can typically run central AC along with other essential circuits.
Home standby generators run on natural gas or propane. Natural gas provides unlimited fuel from your utility connection. Propane requires a storage tank but is available where natural gas is not. Many Prescott Valley homes use propane. A 500-gallon tank can power a typical home for several days during an extended outage.
GENERAC recommends annual professional service including oil and filter changes, spark plug replacement, battery inspection, coolant check (liquid-cooled models), and a full operational test. Your generator also runs a weekly automatic exercise cycle. We offer maintenance plans to keep your system ready year-round.
Yes. A professionally installed home standby generator can increase property value by 3 to 5 percent. In areas like Prescott Valley where monsoon and winter storm outages occur, buyers view backup power as a valuable feature.
Yes. We service and repair GENERAC and other major standby generator brands regardless of who performed the original installation.